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Vapour pressure

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Description of key information

Tartaric acid and its salts have negligible vapour pressures.

Key value for chemical safety assessment

Additional information

A collection of the vapour pressure values was performed for tartaric acid and its salts. For tartaric acid the determination of vapour pressure was performed in compliance with guidelines OECD No. 104 (Vapour Pressure Curve, Gas saturation method) and Council Regulation (EC) No. 440/2008, A.4 (Vapour Pressure, Gas Saturation Method) and under GLP standards. The vapour pressure of tartaric acid was resulted lower than the limit of detection (L.O.D.) of the analytical method (i.e. < 0,000000393 mmHg at 40°C and 20°C). In addition, one literature data of vapour pressure for tartaric acid was available (i.e. 0.0000000493 Torr at 25°C). Since this number is extremely low, the vapor pressure was deemed to be a negligible properties also for the tartaric acid salts (i.e. monosodium, monopotassium, sodium potassium, sodium, potassium and calcium tartrate).

The key value for the chemical safety assessment was < 0,000000393 mmHg at 20°C.